December weather forecastGdańsk, Poland

December

Weather in December

Gdańsk welcomes December with the arrival of deep winter. A remarkable hike in snowfall occurs, with levels escalating from 29mm (1.14") in November to 110mm (4.33"). The picturesque cityscape, draped in white, is a sight to behold. The freezing sea puts a halt to all water-based activities. Yet, the festive season's charm keeps the city lively, making it a perfect destination for a winter holiday.

Temperature

A moderate decline in average high-temperatures is noted in Gdańsk in December, moving from a frosty 6.9°C (44.4°F) in November to a cold 2.5°C (36.5°F). Gdańsk, during December nights, records a temperature marginally cooler than the daytime average, at a subzero cold -0.4°C (31.3°F).

Humidity

January, February and December, with an average relative humidity of 87%, are the most humid months in Gdańsk.

Rainfall

In Gdańsk, in December, during 13.6 rainfall days, 42mm (1.65") of precipitation is typically accumulated. In Gdańsk, during the entire year, the rain falls for 172.5 days and collects up to 497mm (19.57") of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Gdańsk, Poland, during December, snow falls for 11 days and regularly aggregates up to 110mm (4.33") of snow. In Gdańsk, during the entire year, snow falls for 58 days and aggregates up to 437mm (17.2") of snow.

Sea temperature

In December, the average sea temperature in Gdańsk is 6.2°C (43.2°F).
Note: Taking a dip in 6.2°C (43.2°F) can be perilous. Submersion in temperatures under 10°C (50°F) triggers severe cold shock accompanied by hyperventilation.

Daylight

December has the shortest days of the year in Gdańsk, with an average of 7h and 24min of daylight.
On the first day of the month, sunrise is at 07:43 and sunset at 15:25. On the last day of December, sunrise is at 08:06 and sunset at 15:30 CET.

Sunshine

In December, the average sunshine is 3.1h.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Gdańsk. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.
Note: During December, 1 as the daily maximum UV index converts into the following advice:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.

Updated: Feb 1, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature, in December, in Gdańsk, is 2.5°C (36.5°F), while the average low-temperature is -0.4°C (31.3°F).

January, February and December, with an average relative humidity of 87%, are most humid months in Gdańsk.

In Gdańsk, the average relative humidity in December is 87%.

In Gdańsk, Poland, in December, during 13.6 rainfall days, 42mm (1.65") of precipitation is typically accumulated.

In December, it is snowing for 11 days. Throughout December, 110mm (4.33") of snow is accumulated.

In Gdańsk, Poland, the average seawater temperature in December is 6.2°C (43.2°F). Swimming in 6.2°C (43.2°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

December has the shortest days of the year in Gdańsk, Poland, with an average of 7h and 24min of daylight.

The average day length in December is 7h and 25min.

On the first day of December, sunrise is at 07:43 and sunset at 15:25. On the last day of the month, sunrise is at 08:06 and sunset at 15:30 CET.

In Gdańsk, Poland, the average sunshine duration in December is 3.1h.

The months with the lowest UV index are January, November and December, with an average maximum UV index of 1.

The average daily maximum UV index in December in Gdańsk, Poland, is 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

6.9°C

2.5°C

0.6°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

15.6km/h

17.9km/h

17.2km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

3.7

16.2

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

7.5

8.5

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Gdańsk, Poland

Average high temperature in December: 2.5°C

The warmest month (with the highest average high temperature) is August (22.5°C).
The month with the lowest average high temperature is January (0.6°C).

Average low temperature in December: -0.4°C

The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is January (-2.4°C).

Average pressure in December
Gdańsk, Poland

Average pressure in December: 1013.2mbar

The month with the highest atmospheric pressure is October (1016.6mbar).
The months with the lowest atmospheric pressure are July and December (1013.2mbar).

Average wind speed in December
Gdańsk, Poland

Average wind speed in December: 16.8km/h

The windiest month (with the highest average wind speed) is December (16.8km/h).
The calmest month (with the lowest average wind speed) is August (12.1km/h).

Average humidity in December
Gdańsk, Poland

Average humidity in December: 87%

The months with the highest relative humidity are January, February and December (87%).
The month with the lowest relative humidity is April (71%).

Average rainfall in December
Gdańsk, Poland

Average rainfall in December: 42mm

The wettest month (with the highest rainfall) is July (71mm).
The driest month (with the least rainfall) is April (20mm).

Average rainfall days in December
Gdańsk, Poland

Average rainfall days in December: 13.6 days

The month with the highest number of rainy days is July (20.2 days).
The month with the least rainy days is February (8.9 days).

Average snowfall in December
Gdańsk, Poland

Average snowfall in December: 110mm

The month with the highest snowfall is January (128mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in December
Gdańsk, Poland

Average snowfall days in December: 11 days

The month with the highest number of snowfall days is January (16.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in December
Gdańsk, Poland

Average sea temperature in December: 6.2°C

The best month for swimming (with the highest average sea temperature) is August (19.3°C).
The coldest month (with the lowest average sea temperature) is March (2.4°C).

Average daylight in December /
Average sunshine in December
Gdańsk, Poland

Average daylight in December: 7h and 24min

The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).

Average sunshine in December: 3h and 6min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).

Average sunshine days in December
Gdańsk, Poland

Average sunshine days in December: 7.5 days

The month with the most sunshine days is April (15 days).
The month with the least sunshine days is December (7.5 days).

Average UV index in December
Gdańsk, Poland

Average UV index in December: 1

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).